Question

from the bank of the river the top of the building just on the opposite bank is observed to have an angle of elevation of 45 degree on walking 50 meter from the bank perpendicular to its edge the angle of elevation of its top become 30 degree find the height of the building

Answer 1

45 degree on walking 50 meter from the bank perpendicular to its edge the angle of elevation of its top become 30 degree find thee building